Feed-water heater



(No Model.)

T." DAVIS 8v W. W. TYLER.

FEED WATER-HEATER. No.. 337,670. Patented Mar. 9, 1886.

N. PETERS. Phoio-Likhcgrahher. Wilhingion. 0.6.

NITED STATES PATENT rrrcn.

THOMAS DAVIS AND WVILLIAM IV. TYLER, OF CLEVELAND, OHIO.

FEED-WATER H EATER.

SPECIFICATION fol-min art of Letters Patent No. 337,670, dated March 9,1886.

Application tiled October 16, 1885. Serial No. 180,049. (No model.)

To (tZZ whom it may concern:

Be it known that we, THOMAS DAVIS and WILLIAM W. TYLER, of Cleveland, inthe county of Guyahoga and State of Ohio, have invented certain newandsuseful. Improve;

ments in Feed-Water Heaters and Purifiers; and we do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use the same.

Our invention relates to improvements in combined feed-water heaters andpurifiers; and it consists in certain features of construction, and incombination of parts hereinafter described, and'pointed out in theclaims.

In the accompanying drawings, Figure 1 is an elevation of ourimprovedheater and purifier. Fig. 2 is an elevation, in section, at right anglesto the view shown in Fig. 1. Fig. 3 is an enlarged section of the valvefor discharging sediment.

A represents the shell of the heater, that is usually round incross-section with a domeshaped top, A, but the form is not essential,and may be varied according to circumstances. The dome A terminatesabove, preferably in a cylindrical drum, A.

The dome and bottom A are usually secured by bolts or studs so that theyare detachable, by means of which access may be had to the inside of theheater, for cleaning, repairs, or other purposes. Inside the casing hasledges a, for supporting the screens B and the concaved bottom plate, 0,of the heating-chamber.

Between the screens B is the filtering-chamber B, the latter beingfilled with any suitable filtering material. Access to this chamber maybe had by removing the man-hole plate 6. Below the filtering-chamber isthe sediment-chamber D, from which leads the discharge-pipe D, providedwith the valve cl.

On the plate 0 rests the plate 0, the two plates inclosing theheating-chamber c. The plate 0 is preferably dome-shaped, as shown, andis considerably smaller than the dome A, leaving a suitable spacebetween the outer and inner plates, as shown. The plate 0' has a seriesof small perforations, c.

E is a steam-pipe leading from the steamspace of the boiler, and isprovided with a stop-va1ve,e. This pipe passes through the top of thedome A aud screws into the top of the plate 0, so as to discharge intothe heating-chamber e. A stuffing-box, e, is usually employed to make atight joint where the steam; pipe passes through the dome A F isthe"indu'ction feed-water pipe, and is provided in the usual manner withthe checkvalvef and stop-valvef. This pipe is pref- 6c erably connectedwith the side of the dome A, and discharges on top of the plate 0'.

G is a pipe connected with the central or depressed part of the plate 0,and leads down ,r through the filtering-chamber, as shown 1 Fig. 2. Thewater introduced through the pipe F passes through the orifices c andfalls in a spray into the heating-chamber, where it comes in contactwith live steam admitted through the pipe E. The water is of courseraised to a high temperature and passes down through the pipe G, and asthe sedimentchamber becomes filled the water is forced up through thefiltering-chamber into the chamber G, from which it passes through thepipe g to the boiler.

H is a small winged waterwheel, that isset in position for the currentof water passing down through the pipe G to strikethearhugsv orbuckets-h, so as to slowly rotatethe wheel. The wheel is mounted on aspindle, h, that outside the heater has a crank, I, to the wrist ofwhich crank is attached the pawl i. This pawl engages the notches of theratchet-wheel J, so that every revolution of the water-wheel moves thewheel J one or more notches, according to the throw of the crank I. The

wheel J is mounted on a shaft, J, the latter being journaled in asuitable box, j. ,Spitable stuffing-boxes, 6 form tight joints where theshaft h passes out of the shell A. The valve (1 of the pipe D is closedin its elevated position, and is held closed by the pressure of water inthe pipe. The valve-rod d extends upward through the valve-casing, andis in position to be engaged by the lug or cam K, the latter beingattached to the ratchet-wheel, and by means of which engagement onceduring each revolution of the ratchet-wheel the valve is depressed oropened, and is held open a short time until the cam draws ofi' of thevalve-stem, when the water again closes the valve. The heating anddownward discharge of the water tend to precipitate the sediment LII anddeposit the latter on the plate A, from which it is easily blown out itit is not neglected and allowed to remain too long, in which latter casethe sediment forms a hard crust that is removed with difficulty.

By means of the automatic mechanism hereinbet'ore described, every fewhours, and before the sediment has had time to harden, it is blown out.

The apparatus is automatic in all ofits functions, and needs little orno attention, except to occasionally remove or cleanse the filteringmaterial.

The advantages of feeding 'pnrewatcr to the boiler and having the waterheated to such a high temperature as will preventacontraction of theboiler when the water is introduced, are too well known and appreciatedto require further mention here.

\Vhat we claim is- 1. In a i'eedwater heater and purifier, thecombination, with a sedimeat-chamber pro vided with a discharge pipe andvalve, 0t a water-wheel arranged so that the latter is actuated by themovement of the feedwater, said water-wheel having suitable connectingmechanism, substantially as indicated,whereby thefsaigladischargingvalveis operated an tomatically, substantially as set forth.

2. In a feed-water heater and purifier, the combination, with asediinent-chan'iber, a dis charging pipe and valve, and a water-pipeleading to said sediment-ch amber, ot' a water-wheel so located as toreceive the discharge of said water-pipe and be rotated thereby, saidwaterwheel having suitable connecting mechanism,

preferably as shown, for operating automatically the saiddischarge-valve, the parts being arranged and operated substantially asdescribed.

3. In a feed-water heater and purifier, the combination, with aheating-chamber above, a scdimentchamber below, an intermediatefiltering-chamber, and a pipe leading from the heating-chamber. anddischarging into the sedimentchamber, of a water-wheel located in thesedimentchamber in position to be actuated by the current of thefeed-water, said water-wheel having suitable mechanism connectedthereto, arranged substantially as indi- 'eated, for operating thedischarge-valve ot' the sedi merit-chamber, the parts being, arrangedand operated substantially as set forth.

4. In a teed-water heater and purilier, the oombiuation,with awater-wheel located in the sedimeat-chamber in position to receive andbe actuated by the feedw ater in trodneed to the sedii'nent-chamber, ota spindle and crank connected with the waterwheel, and a pawl connectedwith the crank and engaging a ratchetwheel, the latter having a cam orlug for engaging the stem of the discharge-valve, the parts beingarranged substantially as set forth.

In testimony whereof we sign this specification, in the presence of twowitnesses, this 13th day of October, 1885.

THOMAS DAVIS. \VILLIAM \V. TYLER.

Vitnesses:

DANIEL Roe-Ens, G. W. SIIUMWAY.

